class RQRCodeCore::QRCode

def make_impl(test, mask_pattern) #:nodoc:
  @modules = @common_patterns.map(&:clone)
  place_format_info(test, mask_pattern)
  place_version_info(test) if @version >= 7
  if @data_cache.nil?
    @data_cache = QRCode.create_data(
      @version, @error_correct_level, @data_list
    )
  end
  map_data(@data_cache, mask_pattern)
end